2 dead bangers and one headed for death row. Maybe it wasnt a mistake at all. If a kid drowns in your unprotected pool you can be held liable under the attractive nuisance doctrine. This homeowner seems to have done just that.
Wiki:
The attractive nuisance doctrine applies to the law of torts in some jurisdictions. It states that a landowner may be held liable for injuries to children trespassing on the land if the injury is caused by an object on the land that is likely to attract children.[1] The doctrine is designed to protect children who are unable to appreciate the risk posed by the object, by imposing a liability on the landowner.
Non Sequitur